Dear R users
I have tried to install the optimx but met problems.
I have gone to the website you suggested:
https://r-forge.r-project.org/R/?group_id=395
and tried to install it with the following method:
install.packages("optimx",
repos="http://R-Forge.R-project.org")
I have received the following information:
package 'numDeriv' successfully unpacked and MD5 sums checked
package 'BB' successfully unpacked and MD5 sums checked
package 'ucminf' successfully unpacked and MD5 sums checked
package 'Rcgmin' successfully unpacked and MD5 sums checked
package 'Rvmmin' successfully unpacked and MD5 sums checked
package 'minqa' successfully unpacked and MD5 sums checked
package 'setRNG' successfully unpacked and MD5 sums checked
package 'optimx' successfully unpacked and MD5 sums checked
The downloaded packages are in
C:\Documents and Settings\mycomputer\Local
Settings\Temp\Rtmpd7resh\downloaded_packages
after that, I have tried the following example from the manual of optimx but
encountered error message as:
Error: could not find function "optimx"
after that I have tried download the package for windows, optimx_0.86.zip, and
all other support routines, installed them from the menu of "install
package
from local zip file". but i still met the upper error message.
I then use: library("optimx") this loaded the optimx, I think, but the
"optansout" has been masked by Rvmmin and Rcgmin. then when I tried
the
following example, the error message shows:
Error: package 'tools' does not have a name space
any suggestions for the question on the upper two parts? any suggestion are
apprecitated
Nan
from Montreal
Example code from optimx manual:
require(graphics)
fr <- function(x) { ## Rosenbrock Banana function
x1 <- x[1]
x2 <- x[2]
100 * (x2 - x1 * x1)^2 + (1 - x1)^2
}
grr <- function(x) { ## Gradient of 'fr'
x1 <- x[1]
x2 <- x[2]
c(-400 * x1 * (x2 - x1 * x1) - 2 * (1 - x1),
200 * (x2 - x1 * x1))
}
ans1<-optimx(c(-1.2,1), fr)
